God designed a man’s body to prepare to come to his wife, and his wife’s body to receive her husband. God’s “fingerprints” are all over this pairing. Not only does God’s design enhance the enjoyment of intimacy between married partners, but it also increases the likelihood of conception and pregnancy.
In the man, bodily processes work to preserve the sperm on their journey and to increase their mobility.
A Cowper’s gland, or bulbourethral gland, is one of two pea-sized organs found at the base of the penis that produce secretions necessary for fertile sexual activity. Together with the prostate and seminal vesicles, these glands make a mucus-like substance that goes into semen and also acts as a lubricant during sex. They also makes pre-ejaculate fluid, which is the primary lubricant secreted by men during sex and also helps with fertilization and keeps the urethra clear of debris. The amount of fluid secreted varies depending on how old a man is, how long it’s been since he ejaculated, and how aroused he is.…
Pre-ejaculate fluid, produced solely by the Cowper’s gland, serves three main functions. It’s slightly alkaline, so it neutralizes acid levels in a man’s urethra so that his sperm can move freely. It also flushes the urethra of debris like pathogens. This fluid may sometimes pick up sperm left over from previous ejaculations and bring them into the vagina. Once the pre-ejaculate fluid reaches the vagina, it raises its pH slightly, which makes it more hospitable to sperm. This increases the chances of conception.1
The woman’s body also does its part to enhance pleasure and to increase the likelihood of conception.
Vaginal lubrication is a naturally produced fluid that lubricates a woman’s vagina. Vaginal lubrication is always present, but production increases significantly near ovulation and during sexual arousal in anticipation of sexual intercourse.…The vaginal lining has no glands, and therefore the vagina must rely on other methods of lubrication. Plasma seepage from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin’s glands, located slightly below and to the left and right of the introitus (vaginal opening), also secrete mucus to augment vaginal-wall secretions. Near ovulation, cervical mucus provides additional lubrication.2
During sexual arousal, the woman’s vagina undergoes other physiological changes as well. The woman
experiences something called vaginal tenting. This is the tensing of muscles that pull the uterus upward. As this occurs, the vaginal opening is lengthened and widened. The average vaginal opening at rest is, on average, 3-4 inches deep. When excited, the average vagina becomes 5-6 inches deep. This allows the vagina to accommodate the average erect penis size which is right at 6 inches.3
Moreover, a woman’s body provides a hospitable environment for her husband’s sperm.
On a dry surface, such as clothing or bedding, sperm are dead by the time the semen has dried. In water, such as a warm bath or hot tub, they’ll will likely live longer because they thrive in warm, wet places. But the odds that a sperm in a tub of water will find their way inside a woman’s body and cause her to become pregnant are extremely low. When sperm are inside a woman’s body, they can live for up to 5 days. If you’re a man and you have sex even a few days before your partner ovulates, there’s chance she may get pregnant.4
We rightly marvel at these details. They testify to God’s creativity and brilliant design. Yet they also tell us about His intentions for sex. When sexually aroused, man’s body is preparing to unite with a woman’s. Upon sexual arousal, her body, likewise, prepares to unite with his. We can put it this way: A husband’s and wife’s bodies don’t just fit together; they also work together to enhance pleasure and to increase the likelihood of conception and pregnancy. These dynamics can occur only between a heterosexual couple. They never are present in a relationship of two members of the same sex.
This page is part of a larger article.
Copyright © 2015 by B. Nathaniel Sullivan. All Rights Reserved.